Scientists have proposed a new model that elucidates a key step in star formation. They point to 'zombie vortices' as a destabilizing force needed to help protostars accumulate the mass needed to grow into stars.
While observing a newborn star, astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) telescope discovered twin jets of matter blasting out into space at record-breaking speed. These surprisingly forceful molecular 'winds' could help refine our understanding of how stars impact their cloudy nurseries and shape their emerging stellar systems.
In two NASA-funded studies biofilms grown aboard the International Space Station bound space shuttle were compared with those grown on the ground. The study results show for the first time that spaceflight changes the behavior of bacterial communities.
Just how stars and black holes in the Universe are able to form from rotating matter is one of the big questions of astrophysics. Now, a new publication by HZDR physicists in Physical Review Letters shows how magnetic fields can also cause turbulences within "dead zones," thus making an important contribution to our current understanding of just how compact objects form in the cosmos.
Observations with NASA's Chandra X-ray Observatory have revealed a massive cloud of multimillion-degree gas in a galaxy about 60 million light years from Earth. The hot gas cloud is likely caused by a collision between a dwarf galaxy and a much larger galaxy called NGC 1232.
Scientists used laser-cooled ions in so-called 'ion Coulomb crystals'. They were able to show for the first time how symmetry breaking can be generated in a controlled manner and how the occurrence of defects can then be observed.
Europa, the ice-covered moon of the planet Jupiter, may be able to support life. NASA has commissioned a team of expert scientists to consider the science goals for a landed spacecraft mission to the surface of Europa, and to investigate the composition and geology of its icy shell and the potential for life within its interior ocean.